From the German first name Raimondo, consisting of "ragin" = decision inspired by the Gods and "munda" = protection.

A. Bongioanni and V. Blunda agree that the surname derives from the Germanic name composed of the elements ragin ("counsel," "intelligence," "divine counsel") and mund ("protection, tutelage, defence").

Bongioanni identifies it as a Germanic given name (Raginmund, Raymund), from the roots rag, ragan ("good judgement, intelligence") and mund ("defence, protection"). He recalls that several saints bear this name, the most venerated being Saint Raymond of Peñafort, a Dominican who died in 1275, celebrated on 23 January.

Bongioanni enumerates many derived forms in different regions. In Liguria: Raimondi and, more frequent, Ramondo (also a Tuscan form), Ramognini, Ramoino, Ramolino (also in Corsica; it is the surname of the mother of Napoleon), Ramorino, Ramosino and Ramusino. In Piedmont, by metathesis, Armosino. In the Venice area: Remondi, Remondini. In Sicily: Ramondetta. In Lombardy: Rigamonti, Rivamonti and Ripamonti.

Bongioanni also notes that, with greater probability, from Raimondo derive Mondo, Mondella, Mondini or Mondino, Monti, Montini or Montino, and Montecchi, rather than from other Germanic names ending in -mund. For Ramorino and similar ones he leaves some doubt open before a Rodimarinus documented in Farfa in 764. For Montecchi, on the other hand, it is not excluded that in Friuli —where it was Latinized as Monticoli— the derivation is from a place name.

Blunda, for the Sicilian variant, derives it from the Germanic compound Ragin Munda, with the meaning of "protection of the divine counsel" or "tutelage of the counselling gods."

Blunda recalls Raymond IV of Toulouse (c. 1041–1105), count of Toulouse and marquis of Provence, one of the main leaders of the First Crusade together with Godfrey of Bouillon. Although he refused the title of king of Jerusalem after the conquest of the city in 1099, he founded the county of Tripoli in the Holy Land, one of the four Latin states of the medieval Levant, together with the kingdom of Jerusalem, the principality of Antioch and the county of Edessa.